EP 1495564 A4 20090429 - EQUALIZER/FORWARD ERROR CORRECTION AUTOMATIC MODE SELECTOR
Title (en)
EQUALIZER/FORWARD ERROR CORRECTION AUTOMATIC MODE SELECTOR
Title (de)
AUTOMATISCHER MODUSSELEKTOR FÜR ENTZERRER MODUSKORREKTUR
Title (fr)
EGALISAEUR AVEC SELECTEUR DE MODE AUTOMATIQUE UTILISANT UNE CORRECTION D'ERREUR SANS VOIE DE RETOUR
Publication
Application
Priority
- US 0311207 W 20030410
- US 37320502 P 20020417
Abstract (en)
[origin: WO03090389A1] An apparatus for automatically selecting one of a standard decision directed (dd) mode and a soft dd mode in a decision feedback equalizer (DFE) for receiving a data signal includes an equalizer (30) utilizing forward error correction (FEC) for providing first and second output signals corresponding to a DFE automatic switching mode and a soft automatic switching mode, respectively, and a comparator (36) for comparing byte error rates (ByER) of the first and second output signals for selecting as a superior mode that mode associated with a lower ByER and outputting the output signal with the lower ByER. A lock detector (30) provides a lock signal derived from the DFE output signal with the lower ByER and a mode switch (38) selectively places the DFE outputs in one of the dd modes or a blind mode, depending on the lock signal.
IPC 8 full level
H04J 3/12 (2006.01); H04N 5/21 (2006.01); G06F 11/10 (2006.01); H03H 15/00 (2006.01); H03K 5/159 (2006.01); H04B 7/005 (2006.01); H04L 1/00 (2006.01); H04L 1/20 (2006.01); H04L 25/03 (2006.01); H04N 5/44 (2006.01); H04N 7/10 (2006.01)
CPC (source: EP KR US)
H04L 1/0046 (2013.01 - EP US); H04L 1/005 (2013.01 - EP US); H04L 1/20 (2013.01 - EP US); H04L 25/03057 (2013.01 - EP US); H04N 5/211 (2013.01 - EP US); H04N 7/015 (2013.01 - KR); H04N 7/102 (2013.01 - EP US); H04L 2025/0349 (2013.01 - EP US); H04L 2025/037 (2013.01 - EP US); H04L 2025/03732 (2013.01 - EP US)
Citation (search report)
- No further relevant documents disclosed
- See references of WO 03090389A1
Citation (examination)
- WO 03090389 A1 20031030 - THOMSON LICENSING SA [FR], et al
- KARAOGUZ J ET AL: "A soft decision-directed blind equalization algorithm applied to equalization of mobile communication channels", DISCOVERING A NEW WORLD OF COMMUNICATIONS. CHICAGO, JUNE 14 - 18, 1992; [PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON COMMUNICATIONS], NEW YORK, IEEE, US LNKD- DOI:10.1109/ICC.1992.268036, vol. -, 14 June 1992 (1992-06-14), pages 1272 - 1276, XP010061934, ISBN: 978-0-7803-0599-1
- YOUNG-JO LEE ET AL: "A decision-directed blind equalization with the error variance estimation", 1997 IEEE 6TH. INTERNATIONAL CONFERENCE ON UNIVERSAL PERSONAL COMMUNICATIONS RECORD. SAN DIEGO, 12 - 16TH. OCT. 1997; [IEEE INTERNATIONAL CONFERENCE ON UNIVERSAL PERSONAL COMMUNICATIONS], NEW YORK, IEEE, US, vol. CONF. 6, 12 October 1997 (1997-10-12), pages 99 - 103, XP010248678, ISBN: 978-0-7803-3777-0, DOI: 10.1109/ICUPC.1997.625489
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
WO 03090389 A1 20031030; AU 2003230880 A1 20031103; BR 0309179 A 20050125; BR PI0309179 B1 20160531; CN 1647425 A 20050727; CN 1647425 B 20101215; EP 1495564 A1 20050112; EP 1495564 A4 20090429; JP 2005523642 A 20050804; KR 100985486 B1 20101006; KR 20050023246 A 20050309; MX PA04010137 A 20050125; US 2005129107 A1 20050616; US 7158568 B2 20070102
DOCDB simple family (application)
US 0311207 W 20030410; AU 2003230880 A 20030410; BR 0309179 A 20030410; CN 03808693 A 20030410; EP 03723986 A 20030410; JP 2003587039 A 20030410; KR 20047016602 A 20030410; MX PA04010137 A 20030410; US 51138704 A 20041015